Can my smile be widened with dental bonding used on the back teeth as an alternative for veneers?

Hello everyone, I have small teeth and would like to widen my smile but don't want to get veneers (both aesthetic and financial reasons). Is it possible to widen your smile with just bonding on the back teeth? Will this also have an effect on the positioning of the lip, eg have that nice more structural pout look (like when having braces on)? Thank you!